Structure of the Atom · Class 9 · CBSE Science
Define valency. What is the valency of an element with atomic number 16?
Practice question from Structure of the Atom (Class 9 · CBSE Science), with the correct answer and a step-by-step solution.
medium · Subjective · Q-5FC610
Define valency. What is the valency of an element with atomic number 16?
Answer: Valency is the combining capacity of an atom, representing the number of electrons gained, lost, or shared to achieve a stable octet. An element with atomic number 16 (Sulfur) has the electronic configuration 2, 8, 6, meaning it needs 2 electrons to complete its octet, so its valency is 2.
Solution
Valency determines how atoms combine. For Sulfur (atomic number 16), the configuration is 2,8,6; since it requires 2 electrons to complete its outermost shell, its valency is 2.
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